MMDVM/MMDVMHost
1
0
Fork 0
mirror of https://github.com/g4klx/MMDVMHost synced 2025-12-21 06:55:52 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add full FEC decoding to LDU1 and LDU2.

Browse Source
This commit is contained in:
Jonathan Naylor
2016-09-15 20:28:56 +01:00
parent 9423fb25a6
commit 16ec0db6d8
17 changed files with 1017 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
P25Data.cpp
View File

@@ -31,7 +31,9 @@ const unsigned char BIT_MASK_TABLE[] = { 0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04
CP25Data::CP25Data() :
m_source(0U),
m_group(true),
m_dest(0U)
m_dest(0U),
m_rs241213(),
m_rs24169()
{
}
@@ -72,7 +74,9 @@ void CP25Data::processLDU1(unsigned char* data)
CP25Utils::decode(data, raw, 1356U, 1398U);
decodeLDUHamming(raw, rs + 15U);
CUtils::dump(1U, "P25, LDU1 Data after Hamming", rs, 18U);
m_rs241213.decode(rs);
CUtils::dump(1U, "P25, LDU1 Data", rs, 9U);
switch (rs[0U]) {
case P25_LCF_GROUP:
@@ -90,8 +94,6 @@ void CP25Data::processLDU1(unsigned char* data)
break;
}
// XXX Need to add FEC code
encodeLDUHamming(raw, rs + 0U);
CP25Utils::encode(raw, data, 410U, 452U);
@@ -134,9 +136,9 @@ void CP25Data::processLDU2(unsigned char* data)
CP25Utils::decode(data, raw, 1356U, 1398U);
decodeLDUHamming(raw, rs + 15U);
CUtils::dump(1U, "P25, LDU2 Data after Hamming", rs, 18U);
m_rs24169.decode(rs);
// XXX Need to add FEC code
CUtils::dump(1U, "P25, LDU2 Data", rs, 12U);
encodeLDUHamming(raw, rs + 0U);
CP25Utils::encode(raw, data, 410U, 452U);